the moments leading up to the final call. >> the president said, thank you. you will have my decision tomorrow. he got up, walked out. [ male announcer ] citi turns 200 this year. in that time there've been some good days. and some difficult ones. but, through it all, we've persevered, supporting some of the biggest ideas in modern history. so why should our anniversary matter to you? because for 200 years, we've been helping ideas move from ambition to achievement. and the next great idea could be yours. ♪ >>> for nearly a year, only a handful of people closest to the president knew he was weighing a decision to kill or capture osama bin laden. the risk of a leak was deemed so great not even the secretaries of state or defense were in the loop until the final weeks. worries about the huge potential downside loomed large. no one wanted a repeat of the iran hostage crisis, desert one debacle. the high stakes mission, one of the delta force's first that turned into a deadly inferno when a helicopter and plane collided. here now, more of my interview with the